Ulwazi olusisiseko lwabasebenzisi
Inkampani yentsimbi ejikelezayo ivelisa ubukhulu becala intsimbi ejikelezayo eshushu kunye nenkcazo ye-16mm ~ φ150mm.Inxalenye yamandla yomgca wemveliso yenkampani iqhutywa yimoto ye-DC kwaye ixhotyiswe ngeenguqu ezimbini ze-3150KVA.Umzobo wenkqubo yonikezelo lwamandla ngolu hlobo lulandelayo:
Eyona datha yokusebenza
I-avareji yamandla ye-3150KVA DC ye-brushless motor yi-PF = 0.75, i-current esebenzayo yi-2650A, i-pulse ephambili yangoku ngamaxesha angama-5, amaxesha angama-7, kwaye umlinganiselo wokuguqulwa kwangoku yi-19.5%.
Uhlalutyo lweNkqubo yaMandla
Umthwalo oyintloko we-DC brushless motor ballast yi-6 single-pulse ballasts.Isixhobo se-ballast sivelisa inani elikhulu le-pulse yangoku kwi-AC, AC, kunye nokusebenza kwe-DC.Ngumthombo wangoku we-pulse.Xa ifakwe kwigridi yamandla, i-harmonic yangoku I-voltage ye-pulse yangoku esebenzayo ibangelwa ukunyanzeliswa kweempawu zothungelwano lwamandla, okukhokelela ekuphumeni kwe-voltage yokusebenza kunye nekhoyo, ebeka emngciphekweni umgangatho kunye nokhuseleko lokusebenza. yonikezelo lwamandla okutshintsha, kwandisa ilahleko yomgca kunye nokutenxa kumbane osebenzayo, kwaye kunempembelelo embi kuthungelwano lwamandla kunye nezixhobo zombane ngokwazo.
Hlunga isicwangciso sonyango lwembuyekezo yamandla asebenzayo
Iinjongo zolawulo
Uyilo lwezixhobo zembuyekezo zokucoca luhlangabezana neemfuno zokucinezelwa kwe-harmonic kunye nolawulo loxinzelelo lwamandla asebenzayo.
Ngaphantsi kwenkqubo yokusebenza ye-0.4KV, emva kokuba isixhobo sembuyekezo yokucoca sifakwe ekusebenzeni, i-pulse current icinezelwe, kwaye i-avareji yamandla yenyanga ijikeleze i-0.92.
I-High-order harmonic resonance, i-resonance overvoltage, kunye ne-overcurrent ebangelwa ukudibanisa kwi-filter imbuyekezo yesiphaluka yesebe ayiyi kwenzeka.
Uyilo lulandela iMigangatho
Umgangatho wamandla I-harmonics yegridi kawonkewonke GB/T14519-1993
Umgangatho wamandla Ukuguquguquka kweVoltage kunye ne-flicker GB12326-2000
Iimeko zobugcisa ngokubanzi zesixhobo sembuyekezo yamandla asezantsi-voltage asebenzayo GB/T 15576-1995
Isixhobo sembuyekezo yamandla asezantsi-voltage esebenzayo JB/T 7115-1993
Imbuyekezo yamandla asebenzayo iimeko zobugcisa JB/T9663-1999 “I-low-voltage reactive power isilawuli sembuyekezo ezenzekelayo” I-High-order harmonic yangoku yexabiso lomda ukusuka kumandla ombane ophantsi kunye nezixhobo zombane GB/T17625.7-1998
Amagama e-Electrotechnical Ii-capacitors zamandla GB/T 2900.16-1996
I-low voltage shunt capacitor GB/T 3983.1-1989
Reactor GB10229-88
I-Reactor IEC 289-88
I-low-voltage esebenzayo yembuyekezo yolawulo lolawulo lweemeko zobugcisa DL/T597-1996
Umgangatho ophantsi we-voltage yokukhusela indawo yombane ye-GB5013.1-1997
I-low-voltage epheleleyo yokutshintshela kunye nezixhobo zokulawula i-GB7251.1-1997
Iingcamango zoyilo
Ngokwemeko ethile yenkampani, isicwangciso sembuyekezo yamandla asebenzayo e-DC brushless motor filter iyilwe ngokuqwalasela amandla omthwalo kunye noxinzelelo lwangoku lwe-pulse, kunye neseti yembuyekezo yamandla asezantsi-voltage esebenzayo ifakwe kwi-0.4kV ezantsi. icala le-voltage ye-transformer, ukucinezela i-pulse yangoku, kunye nokubuyisela umthwalo osebenzayo, kunye nokuphucula into yamandla.I-ballast ivelisa i-6K-1 i-pulse yangoku kwinkqubo ye-brushless DC motor, kwaye isebenzisa i-cascaded yangoku ukunyibilikisa okwangoku, kunye ne-dissolved current imalunga ne-5250Hz kunye ne-7350Hz.Ke ngoko, imbuyekezo yamandla esebenzayo yokucoca kufuneka yenzelwe i-250Hz, i-350Hz kunye nezinye iifrikhwensi zokuqinisekisa ukuba isihluzi sembuyekezo yesekethe inokucoca ngokufanelekileyo amandla aphumayo akhoyo, iphucule into yamandla, kwaye yenze inkqubo ye-pulse yangoku ihambelane ne-GB/T3. .
umsebenzi woyilo
Umbane obanzi we-3150KVA i-transformer ihlawulwa ukusuka kwi-0.72 ukuya malunga ne-0.95.Izixhobo zokucoca imbuyekezo kufuneka zifakwe kunye 2100KVar, kwaye zahlulwe 6 amaqela zolawulo switsha ukubuyisela ezantsi uxinzelelo kwicala ukujija isiguquli, kwaye uhlengahlengiso umthamo 95KVAR, kuthathelwa ingqalelo iimfuno zamandla imveliso yomgca wemveliso.
Uhlalutyo lwesiphumo emva kokufakwa kwembuyekezo yesihluzi
Ngo-Epreli ka-2011, isixhobo sembuyekezo samandla esisihluzi se-DC semoto safakelwa saza sasetyenziswa.Isixhobo silandelela ngokuzenzekelayo utshintsho lomthwalo wemoto ye-DC, kwaye eneneni ihluza ii-harmonics eziphezulu zokuhlawula amandla asebenzayo kunye nokuphucula amandla ombane.iinkcukacha ngolu hlobo lulandelayo:
Idayagram yokusabalalisa i-Harmonic spectrum
Layisha iWaveform
Emva kokuba isixhobo sembuyekezo sokucoca sisetyenzisiwe, amandla okutshintsha ijika imalunga ne-0.98 (indawo ephakanyisiweyo imalunga ne-0.7 xa isixhobo sembuyekezo sokucoca sisusiwe)
Umsebenzi wokulayisha
Amandla ombane we-3150KVA transformer angaphezulu kwe-0.95, i-harmonic ye-5 iyancitshiswa ukusuka kwi-510A ukuya kwi-102A, i-harmonic ye-7 iyancitshiswa ukusuka kwi-300A ukuya kwi-60A, kwaye ukusetyenziswa kwangoku kuncitshiswe ukusuka kwi-2650A ukuya kwi-2050A, ukuhla kwe-23%.Emva kwembuyekezo, ixabiso lokunciphisa ilahleko yamandla yi-WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=35×{(0.72×3150)/3150}2×0.66≈33 (kw h) Kwifomula, i-Pd yilahleko ye-short-circuit ye-transformer, eyi-35KW, kunye nokugcinwa kweendleko zombane ngonyaka yi-33 * 20 * 30 * 10 * 0.7 * 2 = 280,000 yuan (esekelwe ekusebenzeni kwe-20 iiyure ngosuku, iintsuku ezingama-30 ngenyanga, neenyanga ezili-10 ngonyaka , 0.7 yuan ngekilowatt-yure yombane);ngenxa yokunciphisa i-harmonics, i-bill yombane igciniwe: Ilahleko ye-transformer ebangelwa yi-harmonic current ikakhulu ukunyusa ilahleko ye-ferromagnetic kunye nokulahleka kobhedu.Ilahleko ye-ferromagnetic inxulumene namandla wesithathu we-harmonic yangoku frequency.Ubunjineli Ngokuqhelekileyo, i-2% ~ 5% ithathwa.Ukulungiswa komthwalo, i-2% ithathwa, oko kukuthi, i-WS = 4300 * 6000 * 0.7 * 0.03≈360,000 yuan, oko kukuthi, ukugcinwa kweendleko zombane ngonyaka yi-28 + 36 = 64 (10,000 yuan).
imeko amandla factor
Eyona nto yamalungelo enkampani inyukile ukusuka kwi-0.72 ukuya malunga ne-0.95, into yamalungelo enyanga ihleli kwi-0.96-0.98, kwaye umvuzo wenyanga usuka ngaphezulu kwe-100,000 yeyuan ukuya kwi-15,000 yuan.
I-DC motor filter low-voltage reactive power imbuyekezo iyakwazi ukucinezela i-pulse yangoku kunye nokubuyekeza umthwalo wamandla asebenzayo, ukusombulula ingxaki yesohlwayo samandla asebenzayo, ukwandisa umthamo wemveliso ye-transformer, ukunciphisa ilahleko yembuyekezo yamandla asebenzayo, ukwandisa imveliso, kwaye unike Inkampani ivelise inzuzo ebalulekileyo yezoqoqosho, kwaye umxhasi ufumene utyalo-mali lweprojekthi ngaphantsi konyaka.Ke ngoko, inkampani yaneliseke kakhulu yimbuyekezo yamandla esebenzayo yesihluzo semoto ye-DC ye-brushless, kwaye iya kwazisa abathengi abathile kwixesha elizayo.
Ixesha lokuposa: Apr-14-2023